Carrier VFD problems?

another carrier VFD failed, or is it? blower was not running on arrival, and I suspect the drive had a fault. I did not verify this and then found the fuses not blown. on reset, the drive started and ran. I decided in the end to bypass the drive to prevent another problem and wire in a contactor to control the motor.

[@HVACGUY]

I’ve never quite seen a junction box for a capacitor. Gives new meaning to cap in a box

[@EverythingHVACR]

😆 I've seen these guys and have video on some sketchy shit they've done. That was above and beyond what I've seen previously 😆. Thanks Curtis

[@ryanmcananey6245]

If it’s a furnace, the fan won’t turn on with a call for heat… the gray wire on that VFD board will turn the fan on for heat and cool

[@EverythingHVACR]

Almost missed it myself

[@subcoolHVAC]

That unit probably runs 100% most of the time anyways in a restaurant. 👍 Good job pushing in the contactor too 🤣💪👊

[@EverythingHVACR]

😆 no doubt. Didn't give them an option, added the contactor, and charged them for it. I know this customer, if fixed, they ain't worried about it. Try to always be one step ahead. You know the deal. Thanks, Subcool!

[@jochemsluis8834]

I like how they VFD the blower motor but have a fixed compressor to save power. Here in NZ we run variable speed compressors and blowers due to load and they don't use others brand of VFD's to do it. Temperzone make most of the package units here and are reverse cycle for heating until they get refrigerant logged in the outdoor coil.....🤣🤣🤣

[@jrsmyth9761]

Carrier has a bulletin about installing the contactor and changing the fuses(fuses need to be replaced with correct size to match the motor). The unit's wiring schematic/diagram shows both the VFD wiring and the non-VFD blower wiring.

[@EverythingHVACR]

Thanks JR

[@ryanmcananey6245]

Haha just saw the end of video… really good catch. A lot of people would have left that and not cared or realized

[@EverythingHVACR]

Yeah, I honestly didn't think about it right away, but luckily caught it. Thanks Ryan

[@stevencossaboon3237]

Nice work Steve. Thank you for the knowledge.

[@EverythingHVACR]

Thanks Steven.

[@Eddy63]

Good to hear from ya Steve-o ... Good vid as well ...Thx

[@EverythingHVACR]

Thanks, Eddy! Every Thursday, bro, like clockwork, sometimes 😆

[@jdaalmgren]

0:47 is comedy gold

[@joshstevens9826]

Bumping contacters is common practice. As long as you are safe about it. Unless its a wye delta starter

[@EverythingHVACR]

😆. You gotta know what contactor you're bumping

[@FrostHVAC]

Florida knocks a lot of these VFDs out, its almost like you should never quote them anymore, they always get declined. Ive replaced one before though, not hard, just had to have fun with ABB lol

[@EverythingHVACR]

If they were in a different location, they might last longer. No one replaces here either unless their under warranty.

[@FrostHVAC]

@@EverythingHVACR I never understood why they put it in the blower section, I get to keep it cool but man it does get hella moist in there...

[@alessichris07]

👍👍👍

[@MariosACandRefrigeration]

Nailed it,great fix,thanks for sharing.

[@EverythingHVACR]

Thanks Mario

[@MarcosHVAC]

I’m stealing that capacitor idea 😂

[@EverythingHVACR]

😆 it's all you, bro 🤣

[@ccthepope]

You da man!

[@EverythingHVACR]

I'm something 😆. Thanks, r aeronca!

[@stephenbullock-yn3vh]

Excellent fix 👍

[@EverythingHVACR]

Thanks Stephen.

[@courtrutherford8913]

In my experience it's 2 weeks to a month later that drive will trip again.

[@EverythingHVACR]

Ohh, no doubt that's why I went ahead and bypassed it, not worth a call back.

[@eastcoast186]

Great information video thanks

[@EverythingHVACR]

Thanks East Coast

[@helmsajr]

Great job Steve

[@EverythingHVACR]

Thanks Jr